728 is an even composite number composed of three prime numbers multiplied together.
728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.
Prime factorization of 728:
23 × 7 × 13(2 × 2 × 2 × 7 × 13)
See below for interesting mathematical facts about the number 728 from the Numbermatics database.
Names of 728
- Cardinal: 728 can be written as Seven hundred twenty-eight.
- Scientific notation: 7.28 × 102
Factors of 728
Divisors of 728
Bases of 728
- Binary: 10110110002
- Hexadecimal: 0x2D8
- Base-36: K8
Squares and roots of 728
Scales and comparisonsHow big is 728?
- 728 seconds is equal to 12 minutes, 8 seconds.
To count from 1 to 728 would take you about six minutes.
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 728 cubic inches would be around 0.7 feet tall.
Recreational maths with 728
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Cite this page
"Number 728 - Facts about the integer". Numbermatics.com. 2023. Web. 30 March 2023.
Numbermatics. (2023). Number 728 - Facts about the integer. Retrieved 30 March 2023, from https://numbermatics.com/n/728/
Numbermatics. 2023. "Number 728 - Facts about the integer". https://numbermatics.com/n/728/
The information we have on file for 728 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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